{
"manageEntity": {
"action": "Save",
"entityId": "1187215210",
"entityType": "Track",
"nonce": "0xfc282f992bb2d4c297ecce12a544dfaf9ea01282844af250c658b5a2e91890f6",
"signature": "0xddc9dda85b758ba82c8cca0b8b46259343718d3c28b8e48a8116773190b2f67c7c3a7e51836bbee339d325215be932ea89a6dd4d91e8e1b0fbf80a862b6fba151c",
"signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
"userId": "620307004"
}
}